The following Special Quality types are recommended as plug-in replacements for the corresponding commercial types. Substitution in the reverse direction is not recommended.
TRUSTWORTHY TYPES
Ruggedised construction to withstand vibration and shock
5654 5750 6059 6062 6065 6132 5726 6057 6060 6063 6067 6158
5749 6058 6061 6064 6100 6516
OTHER TYPES
Suitable for long operation under cut-off conditions.
5963 5965 6688 7032 7498 E88CC
| Commercial Type | Special Quality Types |
| 6AK5 | 5654 |
| 6AL5 | 5726, 6058 |
| 6AM5 | 6516 |
| 6BA6 | 5749 |
| 6BE6 | 5750 |
| 6BR7 | 6059 |
| 6BW6 | 6061 |
| 6C4 | 6100 |
| 6CH6 | 6132 |
| 6X4 | 6063 |
| 9D6 | 6065 |
| 12AT7 | 6060 |
| 12AU7 | 6067, 5963 |
| 12AX7 | 6057 |
| 13D3 | 6158 |
| 5763 | 6158 |
| ECC88 | E88CC |
Pingback: Brimar Tubes Date Codes - Tube Maze
Pingback: Brimar 6067 Black Plates - Tube Maze